Type: Thermal printing

7  Size 24 25 26 27 28 29 30 31 Internal length 15

Appearance size: 42

black-black three-bead steel

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AD901 Blood Oxygen Machine, Gem Heart Rate Detector Music World Type: Thermal printingProduct information: Power type: dry battery Color: Black Onyx LED four colors, black onyx LED white light, white gem LED four colors, white gem LED white light, black onyx TFT four colors, white gem TFT four colors Specification: Gem blood oxygen machine Panda blood oxygen machine Product Use: used for measuring blood oxygen saturation, pulse rate heart rate, and pulse strength of the human body Style: Pulse finger clip oximeter Packing list: Blood